Wild Rhea Conservation and Grassland Welfare

Greater and lesser rheas are large flightless birds of South American grasslands facing threats from habitat conversion and hunting. Their welfare depends on protecting native grassland ecosystems.

Key Facts

Greater rheas are the largest birds in the Americas, standing up to 1.5 meters tall
Male rheas incubate eggs and raise chicks from multiple females in a single nest
Rhea populations have declined by 50% or more in areas converted to intensive agriculture
Rheas are hunted for feathers, oil, and leather, adding to habitat-driven population pressure
Rheas play important ecological roles as seed dispersers in pampas and Cerrado ecosystems

Welfare Considerations

Wild rhea welfare is primarily threatened by habitat loss as native South American grasslands are converted to soy and cattle production. Rheas in degraded habitats have less food, more exposure to predators and hunters, and experience greater thermal stress. Chick survival is particularly vulnerable to changes in vegetation structure that affect concealment and foraging. Rheas raised on farms face welfare challenges including overcrowding, stress-induced feather pecking, and poor handling during slaughter. Wild rhea populations benefit from land protection, regulated hunting, and farmer education about coexistence.

What You Can Do

Support organizations protecting native South American grasslands and Cerrado ecosystems
Avoid products whose supply chains drive grassland conversion in rhea habitat
Learn about the role of large birds in grassland ecosystem function
Advocate for sustainable land use policies that allow wildlife coexistence with farming